GW Instek GDM-8246 User Manual - Manual (Page 7)

DUAL DISPLAY DIGITAL MULTIMETER
USER MANUAL
9
6. TRUE RMS AC OR AC+DC CURRENT
Accuracy Between 2% of range and full range.
RANGE 20Hz-45Hz 45Hz-2kHz 2kHz-10kHz 10kHz-20kHz
500μA
5mA
50mA
500mA
1%+15 2%+15
2A —————————
20A
1%+15 0.5%+15
—————————
Protection
Fuse protection 500μA,5mA,50mA,500mA,2A and 20A
ranges, 20A range input for 15 seconds max.
Crest Factor Range 3.0 at full scale.
The burden voltage is the same as the DC current.
When the input exceeds the full scale of the selected range, the display will appear
“—OL—” of over-range indication.
7. FREQUENCY MEASUREMENT AT ACA RANGE
RANGE FREQUENCY INPUT LEVEL (SINE WAVE) ACCURACY
500μA 10Hz ~ 20kHz ≧90μA
5mA 10Hz ~ 20kHz ≧0.9mA
50mA 10Hz ~ 20kHz ≧9mA
500mA 10Hz ~ 20kHz ≧90mA
2A 10Hz ~ 2kHz ≧1A
20A 10Hz ~ 2kHz ≧9A
0.05%+1
AC+DC measurement does not support AC+Hz function.
DUAL DISPLAY DIGITAL MULTIMETER
USER MANUAL
10
8. RESISTANCE
RANGE RESOLUTION ACCURACY
500Ω 0.01Ω 0.1%+4
5kΩ 0.1Ω
50kΩ 1Ω
500kΩ 10Ω
0.1%+2
5MΩ 100Ω 0.2%+2
20MΩ 1kΩ 0.3%+2
Open-circuit Voltage 3.2 volts maximum on 500Ω, 5kΩ 1.3 volts maximum on all
other ranges.
Protection 450V dc or peak ac continuous.
9. CAPACITANCE
RANGE: RESOLUTION ACCURACY
5n * 0.001n
≧1nF: 2%+10
<1nF & ≧0.5nF: 2%+20
50n 0.01n
≧10nF: 2%+10
<10nF & ≧5nF: 2%+30
500n 0.1n
5μ 1n
50μ 10n
2%+4
*5n range tends to be interfered by the test lead’s impedance and position. For the
accuracy, please measure the range on the input terminal directly.
Protection
450V dc or peak ac continuous.
10. DIODE CHECK
Description Display read forward voltage of diode.
Open Voltage 3.1V approx.
Maximum Forward
Voltage
1.5V
Protection 450V dc or peak ac continuous.